Expander for metal container covers



p 1933. .1. F. JOHNSON 1,928,104

EXPANDER FOR METAL CONTAINER COVERS Filed April 7, 1931 l 2a 5 1 4 Z gz/l WQZ 6 r4 Inventor Attarneys Patented Sept. 26, 1933 FOR METAL Ext-mm i "iCOVERS' C TA R John F. Johnson, Richmond, Calif; assignor Standard Oil. Company. of rCalifornia San Francisco, Calif.. a corporation of Delaware I Y -Application April-7, 1931.. SerialNo. 528,307., screa s. 1 c 1. 1 1s. 19) i I My'invention relates to rotary expandingde vices for securin metal covers to metal recepta cles and has particular reference to adevice for securing insertable metal covers to is metal containers.

j Metal receptacles for containing eal holes in liquids or I solids which'must be sealed, frequently comprise a metal can or barrel; onehead ofwhichis provided with an opening through which materials to beplaced in the receptacle may be inserted; The opening is thereafterto ,be' sealed by the in-j sertion off a circular metal cover or seal which must be expandedinto sealing relation with the edges of the opening. It is, therefore, an object of my invention toprovide a tool whichmay be readily employed to expand a seal and tofcri'mp the edges of such seal around the edges of the opening in a receptacle. It is, thereforean: object of the i vention to provide a tool for expanding insertable seals in containers in which the effective expansionoi the seal may be regulated and adjusted to insure;

proper sealing of, the'cov'er with the container.

'Another objector the inventionis to provide a tool for crimping circular seals, placed incir-x cular openings in a; container'in which a plu-jrality of rollers are provided'forengaging and crimping edges'of such seal and in which the distance ,between therollersmay be adjusted to insuresufficient' expansion of the seal toform a completely tight seal with the-container. Anotlier objectj of the invention is to p rovide 'at'ool of the "character describe d inthe preceding paragraph inywhich the' rollers are sofmourited that rotary motion of the tool in the .eration causes expansion of the rollers to insurev .tiglitfsealing engagement of the sealand con- I I p I ing mounted one upon the otherfand spaced from tainer. 1

sealing op- T invention willbe described with reference ft'o' the accompanying drawing, wherein Figure. 1 is stop elevationalfview Oran expander, constructed in accordance with my invention;

Figure pander shown in Fig; 1; ',Figure 3 is a detail 2 -is a' side elevationalview of. the exsectional view of one of the crimping" rollers employed with the expander shown in Big. 1;

Figure 4' is a detail sectional View taken along line IV'-IV of Fig. 1, illustrating the manner of adjusting the relative positions of- .when the expander is in operation;

Figure5 is adetail sectional View tacle fitted with a cover to be sealed with the the rollers.

of a recepe xpander shown in Fig.1; and I rounding thesame.

'a plurality. of relatively H I I I. 'rial forming a triangle. But one plate'may he f -By referring, I oloserved that each of the rollers Y12 and 12a is formed with a cross section including an out-'- lwardly vextendingradial flange 13, a radialrecess Figur e G is a detail Seasons viewsiinilar tIo- 5; illustrating theseal'after it has been sealed and crimped by riyexpande'r;

Referring, particularly, to'Fig. 5 of the draiir m I have illustratedtherein a container- 169 "A seal or'close'r forthe openingiis illustrated I at'5fas comprising a substantially cup-like cir- 70 cular' member constructed of such external diameter as to just fit the peripheral fiange'ofthe.

opening 3.1, Preferably the outer edges: of the seal or 'clos'er- 5 ar'e turned outward1y'*to-torm a radially-extending fla ge firwhichisfarranged (5 to abut the outer surfaceof the drum head;

when the closer is placed within the opening.

The 'me re insertion offthe closer 5', however,

is not sufficient t'o sealthe 'same in place, and'it is; necessarjto-expand the upstanding 'walls or the 'closerb into sealing engagement-with the edges of the opening land to the flanges 4 sur- For this purpose, I? have provided an" expanding tool illustrated; particularly in Figs. 1 and-f2 which comprises a pair of plates 8 and;9.' These platesare illustrated' as being s'ubstantiallytriangular in formation and may be formed either as" a singlefiat plate-bras square strips of mate,-

used for thelframe, if desired." I I I p. l The two'plates 8 and.9 are illustrated-as be each other asby a 5, spacerslo inserts-(1'95 thereb'e'tween. -The spac rs are illustretedifasor" each ofthe' shafts 1-1 andllais secured, re- 100 .spectively. a. crimping roller Y12 and 120,, these 11,;

rollers being 'rotatably mounted upon-the assojciated shaft. Handles 26 and 26aka're mounted upon the upperends 0t shafts ll and 11a. V

particularly, to-Fig. 3, it-willl be 1,4 and a curvedoutwardlyextending flangevlf I I so thatwhenthe roller 12 is forced into 'enga qr' no ment with the seal 5,"th'e flange'l5 will e rpand the flange 4 backwardly upon itself, as

the lower side of the seal 5 into sealing engagement with the depending flange 4 and will bend is indicated in Fig. 6. a i

At the third apex-of the triangle formed by the plates Band 9, I have illustrated a pivot pin 16 which extends through both plates and is se- 7 "cured thereto,

pivot upon which a handle lever ,17 ,mounted.

The pivot pin 16, constitutes a may be The handle 17 is illustrated as comprising an elongated bar upon, each en'dofwhich is mounted a handle 18 and the bar is provided intermediate its ends with an outwardly projecting lug 19 which constitutes the mounting for a third roller 20. The roller 20 is illustrated as being mounted upon a stub shaft 21 secured as by means of a nut 22 to the handle bar 17'.

By referring, particularly, to Fig. 5, it Will'be observed that when the 'device is assembled all three rollers 12, 12a and 20, will lie in the same horizontal plane; so that all three of therollers may -,be inserted within the cup-like seal or closer 5-1,

It will be observed, also, that the pivotal connection'flfi of the handle bar 17'and the mount j ing of the roller 20 is such that the material between the pivot 16' and the shaft 21 constitutes one arm of a lever which permits the roller 20 to-bedrawn inwardly toward rollers 12 and 12a when the handle bar 17 1s rotated in a counterclockwise direction about the pivot 16 withregard to plates 8, 9, while when the handle bar is movedin a clockwise direction, theroller 20 will be moved outwardly with respect to the rollers 12 and, 12a.

. It willbe observed' that the left-hand end 'of' the handlebar 17 will move laterally between the shafts 11 and 11a as the handle bar 17 is rotated either I clockwise or counter-clockwise;

Hence by providing a plurality of aligned openings 23 in the leg 24 of each of the plates 8 and 9, which'leg lies between the shafts 11 and 11a,

' and by inserting a cotter pin 25, or other suitable tract the rollers 12, 12a and 20, permitting the insertion of all three rollers within the sidewalls 7.of the closer5. Then the handle bar17 may be :rotated in a clockwise direction while handles 26' 60 roller '20 to move outwardly relative to the rollers 12 and 12a. This will cause all three rollers to and 26a are held stationary tocfirst cause the engage the side wall '7-of the closer or seal 5 and 1 will force the side wall into-intimate contact with the depending'flanges 4 upon the drum head,

2. The handles 26 and26a are then released and all the turning force exerted upon the handle bar 17. Hence, as the clockwise rotation of the tool is continued, the metal of the seal 5 will be pressed further outwardly to bend backwardly the depending flange 4 and to seat the metal of 'thecloser 5 well under the'edges of thejopenings l3. A'rotation of 360 is not essential as a partial. .rotation of the tool after insertion and expansion will be sufiicient to insure that the rollers 12, 12a

and 20 will engage and press all portions of the it closer 5. I

To insure that'the expansion of. the closer 5 will not be beyond the desired limits, that is, not suflicient to break the metal of which the seal is formed, the cotter pin 25 may be inserted in the V proper-one of the group ofiholes 23 so that the outward movement of the roller 20 is limited to only such distance as will be required to make a proper seal. I .1 c

While I have illustrated and described the preferred embodiment of my invention, I do not desire to be limited to any of the details shown 'ordescribedherein, except as defined in the appended claims; j Iclaim: "I" I. 1. A tool for expanding circular metal closers rality of crimpingrollers, means mounting all of said'rollers in the same horizontal plane said mounting means comprising two relatively movable members pivoted'to move in a plane parallel to the plane of said rollers, certain of said rollers into sealing engagement with containers, -a plumounted upon one of said members and the re-.

maining rollers mountedupon the other'fof'said members in ofiset relation relative to: SaidIDiVQt whereby relative movement of said mounting a ,members will 'move its rollers toward or I away from theremaining rollers.

c 2. A tool for expanding circular metal closers into sealing. engagement with containers",'arplate, a plurality'of crimping rollers carried by said plate and lying in the same horizontal plane," ahandle, member, pivotmeans spaced from said ho rollers securing said handle, member'to said plate its for pivotal movement relative to said plate in 'a' plane parallel to the plane,ofjsaidrollers, an

additional-roller mounted upon said handle memberv and lying in the same plane assaid other; rollers, said mounting of said; additional ro11er 1 1 beingspaced from said pivot pm. I

3. A tool for ,expanding circular metal closers into sealingengagement with containers, a pair of plates secured to andsp'ace'cl'from.ea'chiother, 7

a plurality of, crimping rollers mounted upon said plates" in spaced relation to each other and lying in the same horizontal plane, a'handlememb ha pivot means secured to said platesinspaced relation to said crimping rollers andpivotally securing 7 said handle memberto said plates for movement 7 in a plane'parallelto the plane of'saidcrimping rollers, and'an additional'crimping roller mounted uponsaid handle member, in spaced relationto said pivotv pin and lying in the same horizontalv plane as said other "crimping rollers; Y 4. A tool for expanding circular metal closers into sealing engagement" with containers, a pair of plates securedto andspaced from each other,

a-plurality of crimping rollers mountedupon said plates in spaced relation to each; other andlying in the samehorizontal 'plane'fa handle member, a pivot'means. secured to said plates in spaced relation to said crimpingrollers and pivotally secur- 1,

ing said handle member'to said plates for movement ina plane parallel to the plane of said "crimping rollers, an additional crimping roller mounted upon said handle member in spaced relation to said pivot pin'and lying in the same horizontal plane as said other crimping'rollers' and means adjustably'limiting the relative movement of said handle member andsaid plates.

5., A tool for expanding circular metal closers into sealing engagement with containers, a pair of plates secured to and spaced from each other,.

a plurality of crimping rollers mounted up'onsaid plates in spaced relation to each other and'lying in the same horizontal plane, a pivot pin secured to saidplates in spaced relationto said rollers, a 7 handle member pivotally secured to said pivot prising a plate of relatively triangular configuration having crimping rollers at two of its apices, said rollers lying in the same horizontal plane and having at the third apex a pivot pin extending at right angles to the plane of said;rollers, a handle member pivoted to said pivot pin, a third roller secured to saidhandlemember and lying in the 1" third roller being spaced same plane as said other rollers, the 'axis of said n from the said pivot pin.

7, A tool for expanding'circular metal .closers' into sealing engagement with containers, 2. plate) a plurality of crimping rollers carried by 'said' plate and lying in the same horizontal plane, a v

handle member,-pivot means spaced from" said rollers securing said'handle member to said plate for pivotal movement relative to said plate ina v} plane parallel to the'plane of'saidrollers, an ad- I ditional roller mounted upon said handl'efmember v x and lying in the same plane as said other rollers,

said mounting of said additional roller 'being "spaced from said pivot pin and each. of" said crimping rollers comprising a radial flangeior i,

engaging the top of saidclosermember, and a second radial flange spaced from said firstflange for engaging the side wall of said closer below said top. r

JOHN F. JOHNSON. 

